Method and device for separating and uniting artificial fibrous structures to form aconnected fibrous band



June 18, 1. I

Filed Sept. 7, 1958 arrangement the discs Ia and 2a are rotated insynohronism by a driven gear l8 which meshes with a gear wheel securedon a shaft carrying the beveled gear IS. The geveled gear l4 engagesthebeveled gear teeth of the gear l6 and thus rotates the shaft 4 andthe disc 2a which drives the disc la by means of the teeth 5a. The knife9 secured to the shaft I1 is rotated in synchronism with the discs laand 20. by means of a gear [9 which meshes with the driven gear l8.

A plurality of cutting devices such as shown in Figs. 2 and 6 may bearranged adjacent each other as illustrated in Fig. 3 wherein thesevered pieces of the fibrous material are delivered onto moving bands Mwhich converge so as to group the separated pieces. The timing of theindividual cutting devices'may be so adjusted that the cuts in thevarious strands do not conincide but are staggered as illustrated inFigs. 4 and5.

While detailed structural arrangements have been described for carryingout the invention it is apparent that changes may be made therein andmodifications may be adopted without departing from the spirit and scopeof the invention as set forth in the appended claims.

I claim:

1. Apparatus for cutting fibrous strands of artificial filamentscomprising, two discs having circiunferentially spaced recesses in theperipheries thereof. said discs being arranged with the faces thereofadjacent each other and with the axis inclined with respect to eachother so that the inner faces of the discs adjacent the peripheriesthereof engage the fibrous strand. an annular projection carried by oneof the discs adjacent the periphery thereof and projecting towards theother disc for supporting the fibrous strand, and a rotating knifehaving a screw shaped cutting edge arranged to ass through said recessesof both discs and out said filaments while the strand is engaged by theinner faces of the discs.

2. Apparatus for. cutting fibrous strands of artificial filamentscomprising, two discs having circumferentially spaced recesses in theperipheries thereof, said discs being arranged with the faces thereofadjacent each other and with the axes inclined with respect to eachother so that the inner faces of the discs adjacent the peripheriesthereof engage the fibrous strand. a plurality of teeth carried by eachdisc adjacent the periphery thereof and projecting towards the otherdisc for supporting the fibrous strand and engaging each other, and arotatable knife having a screwshaped cutting edge arranged to passthrough the recesses of both discs and out said filaments while thestrand is engaged by the inner faces of the discs.

3. A method of severing fibrous strands of artificial filaments whichcomprises, continuously moving the strand, bending the strand, clampingthe bent strand adjacent a point where the filaments are to be cut,progressively severing the outer filaments and the inner filaments ofthe bent strand while the filaments are thus clamped.

4. A method of severing fibrous strands of artificial filaments whichcomprises, continuously moving the strand, laterally gripping the strandadjacent points where the filaments are to be severed, and draw cuttingthe strand in a direction oblique to the axis of the strand at spacedintervals while the filaments are thus gripped.

5. A method of completely severing fibrous strands of artificialfilaments which comprises, continuously moving the strand, bending thestrand in an arcuate form during movement thereof, laterally grippingthe arched strand adjacent a point where the filaments are to besevered, drawing a cutting edge transversely through the filaments atthe outer circumference of the arched strand radially inward through theremaining filaments while the filaments are laterally gripped.

6. A method of severing fibrous strands of artificial filamentscomprising, continuously moving the strand, bending the strand along itslongitudinal axis in an arcuate shape to tension outer filaments withrespect to the inner filaments of the strand, clamping the strandadjacent a point where the filaments are to be cut, and drawing a knifeedge obliquely through the outer filaments and moving the knife edgeobliquely and radially inward to sever the inner filaments.

EDMUND HAMEL.

